PNR vs POOL: Which Is the Better Buy in 2026?

Same yardstick, side by side (as of October 2026). Valuation lined up like this is most meaningful for two names in the same corner of the market, which these are. Figures are approximate; verify before investing.

Reading it: PNR is the cheaper of the two on forward earnings, but cheaper is not the same as better. Pair the valuation with growth (how far the forward P/E sits below the trailing P/E) and risk (beta) before you decide.

The metrics above tell you which is the marginally better business. The bigger risk for most people is not picking the slightly worse stock, it is over-concentrating. PNR and POOL share themes, so owning both, or adding either to what you already hold, can quietly push a large share of your portfolio into one bet.

This is the part a generic comparison page cannot answer, because it depends on what you own. Connect your brokerage and Walnut shows your real, combined PNR and POOL exposure, flags overlap with your existing positions, and tells you if adding one would tip you past a concentration you are comfortable with, read-only by default, with your login staying at your broker. Walnut is not an investment adviser.

Pentair plc is a roughly $4 billion revenue water treatment and flow company that most consumers know through its Pool segment, which makes pumps, filters, heaters, automation, and sanitization gear for residential and commercial swimming pools. Beyond pools, the Water Solutions segment sells residential and commercial water treatment (softeners, filtration, and quality systems) plus, after a January 2026 reorganization, the residential and irrigation flow business, while the Flow segment covers industrial, agricultural, and municipal pumps and fluid-handling equipment. As of October 16, 2026 Pentair carries a market capitalization near $8.6 billion and trades around $53, less than half its 52-week high near $112. On October 1, 2026 it completed the roughly $1.4 billion acquisition of Taco Group, financed partly with term loans, adding hydronic and flow products to the portfolio.

Full PNR guide

Pool Corporation (Nasdaq: POOL) is the largest wholesale distributor of swimming pool and related outdoor-living products in the world, operating roughly 455 sales centers across North America, Europe, and Australia and distributing more than 200,000 products to about 125,000 wholesale customers. Its catalog spans pumps, filters, heaters, cleaners, chemicals, repair parts, plus irrigation and grounds-maintenance goods, and it primarily sells to pool builders, retailers, and service professionals rather than consumers. A large share of demand comes from non-discretionary maintenance and repair of the existing installed base of pools, which gives the business a recurring, weather- and season-driven revenue stream on top of the more cyclical new-pool-construction and renovation segments.

Full POOL guide

Both fit overlapping themes, but they are not interchangeable. The useful comparison is which set of drivers and risks you want exposure to.

• PNR drivers: Pool as the profit and growth engine; Transformation and margin expansion.
• POOL drivers: Recurring maintenance demand; Distribution scale and share gains.

A faster-growing, richer-valued name usually swings harder, so it suits a longer horizon and a higher tolerance for volatility; a steadier, more cash-generative business suits a more conservative or income-minded investor. The honest test is which set of risks you could hold through a drawdown: Pool and water-treatment demand is cyclical and sensitive to housing activity, discretionary spending, and interest rates, and 2026 showed how fast that can bite: Pool sales fell 42% in Q2 on dealer destocking, and some analysts have raised the possibility of dealer share loss rather than a pure inventory reset. For POOL, new pool construction and remodel demand are discretionary and highly sensitive to housing turnover, consumer confidence, and interest rates, so a prolonged high-rate or weak-housing environment can keep the cyclical segment depressed.

Growth-minded investors who believe the theme has years to run tend to accept the richer multiple for more upside; value-minded investors lean toward the cheaper forward earnings and steadier profile. Pick PNR if you believe its drivers more; POOL if you believe its. Many investors hold both, but since they share themes, that is a concentrated bet, not diversification. Decide deliberately and check overlap. For the full detail, see the PNR and POOL guides.

PNR. Pentair trades around $53 in mid-October 2026, roughly half its 52-week high near $112, at about 13.7x trailing and 10x forward earnings with a dividend yield near 2 percent, the cheapest it has looked in years on those measures. The discount reflects a falling top line (Q2 sales down 17%) and cut guidance rather than a margin story still working. Consensus for Q3, reported October 27, is about $1.07 of EPS on ~$964 million of revenue, both below last year.

POOL. POOL posted FY2025 net sales of about $5.29 billion and net income near $406 million, and the first half of 2026 brought small beats in both quarters (EPS $1.43 vs $1.35, then $5.38 vs $5.34) without a return to real growth. Consensus 2026 EPS sits near $11.00, consistent with management's earlier guidance range of about $10.85 to $11.15. At roughly 15-16 times earnings and a 3% yield, the stock trades far below its pandemic-boom valuation; Q3 results land October 22, 2026.

Headline figures (approximate, October 2026): PNR shows revenue (ttm) ~$4.0B, q2 2026 sales ~$933M (down ~17%; Pool down ~42%), margins (ttm) Gross ~41%, operating ~23%, net ~16%, net income / eps (ttm) ~$636M; GAAP EPS ~$3.88; POOL shows revenue (ttm) ~$5.39B, latest quarter up ~2% year over year, q2 2026 net sales ~$1.82B; EPS $5.38 vs ~$5.34 expected, net income (ttm) ~$398M; EPS ~$10.89, margins Gross ~29.6%, operating ~15.1%, net ~7.4%.

PNR and POOL are related but distinct: same themes, different businesses and risks. Neither wins in the abstract; the right pick is whichever thesis you actually believe, sized so you are not over-concentrated in one theme. Walnut can show your combined PNR and POOL exposure against your real portfolio. It is not an investment adviser.